Container for storing and transport



y 1960 Y. A. F. FAGERLUND ET AL 2,943,759

CONTAINER; FOR STORING AND TRANSPORT Filed Nov. 25, 1956 BY 441 M,

M ATTORNEYS INVENTOR United States Yng've Anders Fredrik Fagerlund and Bengt Olof Blomqvist, Stockviksverken, Sweden, assignors to Stockholms Superfosfat Fabriks Aktiebolaget, Stockholm, Sweden, a corporation of Sweden I Filed Nov. 23, 1956, Ser. No. 623,975 Claims priority, application Sweden, June 7, 1956 4 Claims. (Cl. 220-55) This invention relates to the receptacle or container art, and is concerned with improvements in containers for the storage and transport of liquids and pulverized or at least fluent solids. While the invention has particular utility in the storage and transport of calcium carbide it is in no sense limited thereto.

When investigating the packing for pulverized and lumpy material such as carbide, we have found that a cubical container provided with a closable opening in a cut-ofi corner possesses great practical advantages compared with the cylindrical sheet metal drums, and the rectangular containers with funnel-shaped openings, which have been used up until now. This feature makes it possible to pile such containers on top of each other without any difliculty and to utilize the storage space completely. Such containers alsopossess the ability to be readily refilled and completely drained due to the substantial inclination of the corners and walls towards the opening at the re-filling and draining position of the container. In addition, such containers meet the requirements of being in a stable or indifierently balanced position in refilling and draining; and, in re-filling, the incoming material will strike material already fed into the container and not the walls of the container.

In re-filling, the cubic container should be placed with the opening facing upwards, and in draining, it is turned 180 around an axis at right angles to a diagonal through the opening and opposite corner. For re-filling and draining the container may be equipped with a tube conveniently extending between opposite corner edge-joints. A rod or the like may be inserted through this tube, projecting partly outside the container. The projecting ends of the rod may be grabbed by a loading shackle or similar device and the container will then be readily transported and turned into re-filling and draining attitudes.

In order not to lose the advantage of complete utilization of the storing space it is imperative that the closing device used must be designed in such a way that'it is included completely in the container piling profile. This invention relates tosuch a design which is particularly suitable for bulk handling of solid "material such as carbide, and involves reinforcement of that corner of the container where the opening is arranged.

A closing device according to the invention is characterized by the fact that it consists of a cover with a flange, or groove, seal against the edge of. the opening, and a pressure plate of such design that it contacts the cover,

which pressure plate is attachable to the container.

The invention will be described in detail in connection with the appended drawings-wherein: Fig. 1 is a front elevational view, partly'in section, of

a corner of a cubic container illustrating concepts of this invention; 1

Fig. 2 is a fragmentary section, taken on section line 2-2 of Fig. 1, showing disposition of closure and its mounting wholly within the piling profile of the container; and

Patented July 5, 1960 ice closure and closure mountings illustrated in Fig. 1.

In Fig. l, the obliquely cut-oil coruer'of a cubic container 1 forms a triangular opening 1a. A triangular sheet metal cover 2 provided with grooves 3 around the entire circumference fitting into the flange of the opening is used as a lid. .The groove might also be designed in the form of a dovetailed groove, or the like. In the groove may be placed a sealing strip (not shown) to provide a gas-tight fit where desired, as for example in transporting carbide. The opening 1a may be provided with a raised list as at 4, in order to improve sealing. The figures also show that the opening may be equipped with a special cover rim 5 which slopes inward from the three plane lateral surfaces of the container corner in order to provide space for the cover seal. To hold cover 2 in place an additional triangular pressure plate 6 is provided which has satisfactory rigidity, the edges 7 of plate 6 being bent down obliquely-preferably at the same angle as the cover rim 5in order to obtain effective pressure action between the entire circumference of the pressure plate 6 and the inside of groove 3 of cover 2. For securing the pressure plate 6, the same is provided with three bolt attachments 8 for clamp bolts 9, which latter are provided with bent terminal ends 10. The terminal ends engage clamps 11 welded to the container on the rounded-off corner edges of the latter. When applying torque to the pressure plate bolts, an equally distributed pressure is obtained around the sealing, due to the rigidity of the pressure plate. As stressed before, the bolt attachments and the clamps are dimensioned in such a way that they are entirely incorporated within the piling profile of the cube.

It is possible to arrange a positive pressure valve or a safety diaphragm designed to eliminate the risk for too high gas pressure in the container. The space between the pressure plate 6 and the sheet metal cover 2 can be used also for storing goods specifications, weight notes, etc., during transport.

We claim: l. A cubical container with an obliquely cut-oil corner providing a triangular opening, said opening being provided with an exterior closing means comprising a triangular cover member engaging and sealing againstthe edge of the opening, a pressure plate member contacting the outer surface of the cover member, at least oneclamp secured to a rounded-cit corner edge of the container, said pressure plate member being releasably secured to the container by means of at least one clamping bolt device each device comprising a bolt attachment secured to the pressure plate member adjacent a corner of the latter and a cooperating clamping bolt one end of which clamping bolt is provided with a terminal hook portion engaging said clamp, said exterior closing and clamping means being substantially included within the container piling profile. V

2. A cubical container as defined in claim 1, in which said cover member is provided with agenerally triangular sealing groove, and in which the edges of the pressure plate member are bent down obliquely and, in, use, exert pressure on the cover member only along a triangular path adjacent to and inside of said sealing groove.

3. A cubical container as defined in claim 1, wherein the pressure plate member is releasably secured to the container by the three said clamping bolt devices and three said clamps.

4. A cubical container as defined in claim 1, in which the container is provided, about the periphery of the opening, with a special rim sloping inwardly from the adjacent three lateral surfaces of the container, which rim defines the effective opening of the container.

(References on following page) References Cited in the file of this patent UNITED STATES PATENTS Anderson Nov. 3, 1908 Kempter Aug. 26, 1919 Whiting et a1 Oct. 2, 1923 Olds Mar. 7, 1933 Cahaney Mar. 22, 1938 France Nov. 14, 1951 

